JPG to DXF converter

How to use it

1. Add a JPG or JPEG. A high-contrast logo, drawing or silhouette gives the cleanest result.
2. Set the output width in millimeters.
3. Raise or lower the threshold until the red lines trace the outline you want. Raise Remove small specks if stray bits appear.
4. Download the DXF.

Why JPGs need a little more care

JPEG compression adds faint noise around edges and flattens subtle detail. In a file meant for cutting, that noise can show up as ragged edges or tiny extra shapes. Two settings handle most of it: a threshold that sits clear of the gray fringe around your shapes, and Remove small specks set high enough to discard the stray dots.

JPGs also have no transparency. The background is whatever color the image has, usually white, and the threshold is what separates it from your shapes.

Tracing a photo of a drawing

A sketch drawn on paper can become a cutting file. Photograph it straight down, in even light, with no shadow across the page. Dark pen on white paper works best. Then use the threshold to pick up the lines without the paper grain. If the lines are thin, a bigger photo helps, since the tracer can only follow what the pixels show.

What the settings do

Output width (mm)

Sets the width of the artwork itself. Height follows its proportions.

Threshold

The brightness cutoff between shape and background. Try values between 90 and 170 and watch the red lines.

Remove small specks

The main control for JPEG noise. Higher values drop more tiny shapes.

Smoothing

Evens out wobble along edges and reduces the number of points.

What people use it for

• Turning a photographed sketch or paper template into a cutting file
• Creating outlines from a logo that was only sent as a JPG
• Making stencil shapes from clip art
• Quick shape references for CAD work